System Requirements：1.Miracast：Android 4.4 +/Windows 8,Windows 10 +2.AirPlay：iOS 8 +, Mac OS10.0+3.DLNA：Intelligent device Built-in or installed Apps support DLNA function【2.4G/5G Dual-band WIFI】Q4 Wireless Display Dongle with outer WIFI antenna added which provides farther distance transmission. In comparison with 2.4G, the bandwidth will be wider by connecting to 5G which will also have more stable network connection and fluent signal transmission. Driver or APP is not required. Support online system update automatically.【1080P HD+AV Dual Output】It supports HDMI 1.4 and 1080P Full HD output. AV interface can connect to the speaker or AV display. With LED working station indicator designed. With two different press button modes that short press is for switch Airplay (iOS) /Miracast (Android) and long press is for factory reset.【Multiprotocol Support】It supports AirPlay (iOS8.0+ / Mac OS10.0+), Miracast (Android4.4+ / Win8+) and WiDi (Intel Wireless Display). It can synchronize the photo/video/game/browser/APP and so on from phone, tablet and laptop to big screen and projector. “DLNA PUSH” supports playing video on big screen while operating the phone to do the other thing.【Compact and pocketable】Q4 WIFI screen mirroring adapter is perfect for office or school presentation with PPT, Excel, Word, PDF and Picture which can be mirrored to HD TV or projector from phone or tablet. Note: It doesn’t support playing the video with copyright protected, such as Netflix / iTunes / Amazon Video / HBO go / Hulu Plus / Honda Motor / ESPN and so on.【Warranty】30 days refund guarantee and 12 months free maintenance from the date you purchased. Please refer to the quick guide for the installation. Contact us with any query freely, our customer service team will get back to you within 24 hours.